/Engine/Plugins/Animation/MLDeformer/MLDeformerFramework/Source/MLDeformerFramework/Public/MLDeformerMorphModel.h
Get the array of morph target indices, sorted by error value, from largest to smallest error. So the first array value contains the index of the most important morph target and the last element contains the least important morph target.
An array view of the morph target indices.
[TArrayView](API\Runtime\Core\Containers\TArrayView)< const int32 > GetMorphTargetErrorOrder() const